Bobbin.



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Witnesses Attys.

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UNITED STATES PATENT (DEEICE.

F.'LI E. IIENDRICK, OF CARBONDAIJE, PENNSYLVANIA.

BOBBIN.

SPECIFICATION forming part of Letters Patent N 0. 649,639, dated May 15,1900.

Application filed August 3, 1899.

To all whom t may concern:

Be it known that I, ELI E. I-IENDRIOK, a citizen of the United States,residing at Carbondale, in the county of Lackawanna and State ofPennsylvania, have invented certain new and useful Improvements inBobbins, of which the following is a description.

The object of the present invention is to produce a bobbin constructedof few parts, which shall be easily assembled and applied, and whichshall be durable in operation and cheap of manufacture.

In carrying out the invention I preferably construct the bobbin, inwhole or in part, of hard ber. In an approved form of construction Iemploy a tubular body of wood, the heads at either end of this bodybeing of hard fiber. The bobbin so constructed is mounted upon aninternal core or mandrel in the manner hereinafter described.

In the drawings, Figure l is a central section illustrating myinvention, and Fig.,2 is a similar view illustrating a modification.

Referring to the figures, in which similar referencesletters denotecorresponding parts, A designates the tubular body, preferably of woodand here shown as of uniform diameter throughout. At either end thisbody is provided with a circular head B, formed, preferably, of hardfiber. These heads are secured to the body in any suitable manner. Inthe drawings I have shown the inner surfaces of the heads B as providedwith annular recesses in which the ends of the body are secured.

C designates the core or mandrel. As here shown, this is provided with atapering bore c to receive the spindle on which the bobbin is mounted.Each end of the mandrel is eX- teriorly screw-threaded, as shown at c.The mandrel is also provided near each end with an annular shoulder c2.The screw-threads 'c' extend to or toward these shoulders, as

Serial No. 725,945. (No model.)

proper position, as shown in the drawings, their under surfaces adjacentto the central threaded perfor-ations rest upon and bear against theshoulders c2. On screwing the jam-nuts D down upon said heads all theparts are held securely against displacement.

In Fig. 2 I have illustrated a modification, which consists ofinterposing washers E between the shoulders c2 and the inner surfaces ofthe heads B. These washers may be interiorly threaded, if desired, 'andmay be made of any suitable material. By employing washers E ofdifferent thicknesses a standard length of mandrel may be used inconnection with bodies of diderent lengths, as will be understood. Inthe drawing, Fig. 2 the screw-threads on the ends of the mandrel areshown as ending short of the shoulders c2, the sides of the centralperforation in the washers E in this case not being threaded.

What I claim, and desire to secure by Letters Patent, is

l. As a new article of manufacture, a bobbin having a body provided withheads, a hollow core or mandrel provided with shoulders against whichsaid heads bear and means for clamping said heads against saidshoulders, substantially as described.

2. A s a new article of manufacture, a bobbin having a body providedwith heads, a hollow core or mandrel having shoulders against which saidheads bear, the ends of said core or mandrel being threaded and pro#truding through and beyond said heads, and jam-nuts engaging with theprojecting thread ed portions and adapted to clamp said heads inposition, substantially as described.

3. As a new article of manufacture, a bob# bin .having a body providedwith heads, a hollow core or mandrel having shoulders carrying washersagainst which said heads bear, the ends of said core or mandrel beingthreaded and protruding through and beyond said heads, and ja1n-nutsengaging with the projecting threaded portions and adapted to clamp saidheads in position, substantially as described.

This specification signed and witnessed this 1st day of August, 1899.

ELI E. IIENDRICK.

Witnesses:

GEO. WY. CEoss, J. E. VANDEEFORD.

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